difftool: handle unmerged files in dir-diff mode
[gitweb.git] / builtin / submodule--helper.c
index bc79c41b5870868b3618710f316ac24ac1f70fe8..3bea3aaa5029082198abab2b5a5dab838dbd6dec 100644 (file)
@@ -8,6 +8,7 @@
 #include "submodule.h"
 #include "submodule-config.h"
 #include "string-list.h"
+#include "run-command.h"
 
 struct module_list {
        const struct cache_entry **entries;
@@ -21,17 +22,12 @@ static int module_list_compute(int argc, const char **argv,
                               struct module_list *list)
 {
        int i, result = 0;
-       char *max_prefix, *ps_matched = NULL;
-       int max_prefix_len;
+       char *ps_matched = NULL;
        parse_pathspec(pathspec, 0,
                       PATHSPEC_PREFER_FULL |
                       PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
                       prefix, argv);
 
-       /* Find common prefix for all pathspec's */
-       max_prefix = common_prefix(pathspec);
-       max_prefix_len = max_prefix ? strlen(max_prefix) : 0;
-
        if (pathspec->nr)
                ps_matched = xcalloc(pathspec->nr, 1);
 
@@ -41,9 +37,9 @@ static int module_list_compute(int argc, const char **argv,
        for (i = 0; i < active_nr; i++) {
                const struct cache_entry *ce = active_cache[i];
 
-               if (!S_ISGITLINK(ce->ce_mode) ||
-                   !match_pathspec(pathspec, ce->name, ce_namelen(ce),
-                                   max_prefix_len, ps_matched, 1))
+               if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
+                                   0, ps_matched, 1) ||
+                   !S_ISGITLINK(ce->ce_mode))
                        continue;
 
                ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
@@ -56,7 +52,6 @@ static int module_list_compute(int argc, const char **argv,
                         */
                        i++;
        }
-       free(max_prefix);
 
        if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
                result = -1;
@@ -123,6 +118,131 @@ static int module_name(int argc, const char **argv, const char *prefix)
 
        return 0;
 }
+static int clone_submodule(const char *path, const char *gitdir, const char *url,
+                          const char *depth, const char *reference, int quiet)
+{
+       struct child_process cp;
+       child_process_init(&cp);
+
+       argv_array_push(&cp.args, "clone");
+       argv_array_push(&cp.args, "--no-checkout");
+       if (quiet)
+               argv_array_push(&cp.args, "--quiet");
+       if (depth && *depth)
+               argv_array_pushl(&cp.args, "--depth", depth, NULL);
+       if (reference && *reference)
+               argv_array_pushl(&cp.args, "--reference", reference, NULL);
+       if (gitdir && *gitdir)
+               argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
+
+       argv_array_push(&cp.args, url);
+       argv_array_push(&cp.args, path);
+
+       cp.git_cmd = 1;
+       cp.env = local_repo_env;
+       cp.no_stdin = 1;
+
+       return run_command(&cp);
+}
+
+static int module_clone(int argc, const char **argv, const char *prefix)
+{
+       const char *name = NULL, *url = NULL;
+       const char *reference = NULL, *depth = NULL;
+       int quiet = 0;
+       FILE *submodule_dot_git;
+       char *p, *path = NULL, *sm_gitdir;
+       struct strbuf rel_path = STRBUF_INIT;
+       struct strbuf sb = STRBUF_INIT;
+
+       struct option module_clone_options[] = {
+               OPT_STRING(0, "prefix", &prefix,
+                          N_("path"),
+                          N_("alternative anchor for relative paths")),
+               OPT_STRING(0, "path", &path,
+                          N_("path"),
+                          N_("where the new submodule will be cloned to")),
+               OPT_STRING(0, "name", &name,
+                          N_("string"),
+                          N_("name of the new submodule")),
+               OPT_STRING(0, "url", &url,
+                          N_("string"),
+                          N_("url where to clone the submodule from")),
+               OPT_STRING(0, "reference", &reference,
+                          N_("string"),
+                          N_("reference repository")),
+               OPT_STRING(0, "depth", &depth,
+                          N_("string"),
+                          N_("depth for shallow clones")),
+               OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
+               OPT_END()
+       };
+
+       const char *const git_submodule_helper_usage[] = {
+               N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
+                  "[--reference <repository>] [--name <name>] [--url <url>]"
+                  "[--depth <depth>] [--] [<path>...]"),
+               NULL
+       };
+
+       argc = parse_options(argc, argv, prefix, module_clone_options,
+                            git_submodule_helper_usage, 0);
+
+       if (!path || !*path)
+               die(_("submodule--helper: unspecified or empty --path"));
+
+       strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
+       sm_gitdir = xstrdup(absolute_path(sb.buf));
+       strbuf_reset(&sb);
+
+       if (!is_absolute_path(path)) {
+               strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
+               path = strbuf_detach(&sb, NULL);
+       } else
+               path = xstrdup(path);
+
+       if (!file_exists(sm_gitdir)) {
+               if (safe_create_leading_directories_const(sm_gitdir) < 0)
+                       die(_("could not create directory '%s'"), sm_gitdir);
+               if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
+                       die(_("clone of '%s' into submodule path '%s' failed"),
+                           url, path);
+       } else {
+               if (safe_create_leading_directories_const(path) < 0)
+                       die(_("could not create directory '%s'"), path);
+               strbuf_addf(&sb, "%s/index", sm_gitdir);
+               unlink_or_warn(sb.buf);
+               strbuf_reset(&sb);
+       }
+
+       /* Write a .git file in the submodule to redirect to the superproject. */
+       strbuf_addf(&sb, "%s/.git", path);
+       if (safe_create_leading_directories_const(sb.buf) < 0)
+               die(_("could not create leading directories of '%s'"), sb.buf);
+       submodule_dot_git = fopen(sb.buf, "w");
+       if (!submodule_dot_git)
+               die_errno(_("cannot open file '%s'"), sb.buf);
+
+       fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
+                      relative_path(sm_gitdir, path, &rel_path));
+       if (fclose(submodule_dot_git))
+               die(_("could not close file %s"), sb.buf);
+       strbuf_reset(&sb);
+       strbuf_reset(&rel_path);
+
+       /* Redirect the worktree of the submodule in the superproject's config */
+       p = git_pathdup_submodule(path, "config");
+       if (!p)
+               die(_("could not get submodule directory for '%s'"), path);
+       git_config_set_in_file(p, "core.worktree",
+                              relative_path(path, sm_gitdir, &rel_path));
+       strbuf_release(&sb);
+       strbuf_release(&rel_path);
+       free(sm_gitdir);
+       free(path);
+       free(p);
+       return 0;
+}
 
 struct cmd_struct {
        const char *cmd;
@@ -132,6 +252,7 @@ struct cmd_struct {
 static struct cmd_struct commands[] = {
        {"list", module_list},
        {"name", module_name},
+       {"clone", module_clone},
 };
 
 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)